Nicky Bursic shared a stunning snap of herself with her arm around the 36-year-old actress and said she wished her “all the happiness in he world”.
The touching farewell message also appeared to have dropped a hint about her relationship with Prince Harry as engagement rumours continue to swirl.
She captioned the image: “It’s been an absolute pleasure and honor being your ‘STAND-IN’ for the last 2 seasons.
“Though I’ve been on @suits_usa for 6 years, the latter 2 has been my most memorable. Wishing you all the happiness in the world Bella.”
Nicky finished off the caption with a champagne glass emoji and love heart, sparking rumours Meghan’s relationship with the Harry, 33, is reaching the next step.
She also added the hashtags “you deserve it all”, “love her” and “great cast and crew”.
Since the body double posted the picture, she has changed her Instagram page from public to private.
It was recently reported that Meghan – who plays Rachel Zane in the US legal drama – would be leaving the show as she plans to move to London to live with her royal beau.
“Meghan is likely to be moving to London as soon as November,” royal expert Katie Nicholl told ET in October.
“She’s not signing up for another [season] of Suits. She’s planning to leave Canada and make London her new, permanent home.”
But despite the alleged imminent move, Meghan is believed to be spending Thanksgiving with her mother, Doria Radlan, in Los Angles next week.